Tool holder for planers and similar tools



v1643,873 Sept. 27, 1927. F. E. CARDULLO TOOL HOLDER FOR PLANERS AND SIMILAR TOOLS 192 1,643 873 I f 7 7 F. E. cARDuLLo 4 TOOL HOLDER FORo PLANERS AND SIMILAR TOOLS Filed Aug. 18, 192s '2 sheets-sheet 2 QW (VDM Patented Sept. 27, 1927.

UNITED, STATES.

PATENT OEI-fir:1:..A

THE' G. A. GRAY COM- PANY; or' CINCINNATI, o'IIIo, A CORPORATION or OHIO.

TOOL HOLDER FOR' PLNERS AND SIMILAR' TOOLS.

Application filed August 18, 1923.. Serial No. 65&,083..

'the objetar this holder., commonly known. as a tool block or clapper block, tool; ispresented at the properangle andposition for performing its work. Y

A. second. object is to makeit. easy to 'change from. one tool to another, and. to reduceto aminmumthe timerequired for. tool changing. Y

Reciprocatingmachine tools such as planersV are commonly provided with tool. blocks whichare pivoted in such. a manner to. per.- mit the tool. to swing the back. stroke. rI`he block which. swings inthis manner., and to which thev tool` is securely fastened, is commonly called. a. tool block or clapper block.v InA certain kinds of work, it is frequently necessary to use .ft series of tools each one adapted to perform one particular operation of a series.` When the same series of operations is performed over and over again on successive piecesy of the same kind, it is desirable. that means beV provided, whereby each tool, when it is fastened iIi place to4 perform its work. will be automatically placed in the proper position.

Furthermore, it is desirable thatv atool may be removed and. replacedwith. a minimum. of time andetfort. l p

Iiil turret. lathes this is accomplished by mounting the severalv turret, so that when the turret is indexed to avcertain positioma certain tool` is presented in exactly the proper cutting positioinand when the turret is indexed into a second position, a second. tool 'is-presented. inv exactly the proper positionto perfom'its work.

This methodisnotpractical inthe. caseof machinevtools like a planer where must swing free on. the back stroke. necessary either to mount thet-urret,

It. is

a very large clapperfblock, or else to make the turret-much larger than it wouldotherwise be, iniorder to carry a number of clapper blocks-each one carrying its individual tool.

In order to obtain the same advantages without the use of very large and heavy parts, I propose to use the device illustrated and described below.

In the drawings:

Figure l is a front view of a clapper block with the device attached.

invention-is. to provide a` means for attaching tools to a swinging tool` in such` a` manner that each free fromthe work on.

tools on. a revolvable;

the tool s4 which isa. heavy. partl carrying a number of toolson= Eigune 2 isi a side view of this block 'and' device..

.Figure 8. is a top. view of the block. and de vice..

Figure 4; isa side view of; theftoolbholder. Figure 5 is a back view of thetool holder. Figure 6 ist a top view ofthe toolholdei'.. VIn these drawings, .1. is` a. claipper. block` whichA swings. on a pin inserted. in. the ta-V pered hole la. In the face of thisblock are. formed. grooves 1P andA 1P. Screwed. into this block. is stud. 2. Against the face oft this block is placed tool holder 3. On the. back.. of tool holder 3 are milled. tongues 3l and. 3C which engage with grooves 15 andAv 1?.. Iny tool holder 3. is. formed a rectangular.` opening` 3a through which. stud 2 projects, when the tool, holder is in place.y The tool holder is held against theclapper block by a rectangular clamp or button 4f, which slides over stud. 2. Whenthis clamp is. in the position. shown in full. lines in Figure 1?, nut is screwed down firmly against it, and4 it holds thetooLholder 3 firmly in placev against clapper block l. If', however, nut. 5A is un.- screwed slightly., buttons may be revolved 90 degrees into the position. shown by the dotted. lines. in Figure l. The toolholder 3 may he. removed. since button 4. is slightly smaller. in. size andl of` practically the same shape.l as. opening 3&1 The same tool holder orfanother tool holder` may then.. he slipped' into exactly the-saine. place, since the tongues will. engagethe grooves in theclapper block.. If now. the clamp 4. be rotated 9.0 degrees into the position vshown by the. fullflines-a slight. turn of iiut- 5 will quickly clamp the second tool holder. in exactly the same position as. the first. The. tool holder. ma)r be. provided. with any suitable means'for holding the tool. in place. The tool holder shown is. 'pro-` vided Vwith. a breached hole in which is placed` tool 64 whichis heldfast by set screw 7. rlhis. toolmay be. of any desired' form, and'thetool holderA arranged'` to hold it` at any desired. angle, according to the nature ofthe work. tovbe performed., y

In order that clamp I may not be turned out of position when the nut is tightened, in 8 is inserted in tool holder 3 to limit the rotation of the clamp about the stud, so that when the nut is turned in a clockwise direction, so as to clamp the tool holder in place the clamp will not be turned too far.

It will be seen that by providing a series of tool holders, each containing a properly adjusted tool, repetition work is greatly facilitated, since when such a tool holder is fastened in place, the tool that it carried will be inthe correct position for performing its work.

It is obvious that various means differing from those shown may be employed for holding the toolholder in the required position, and for fastening it to the clapper block. Furthermore, while this device is particularly useful for those machines requiring a clapper box, the tool holder may be mounted directly upon a slide or other 'tool supporting member, in the manner described for the clapper block. I, therefore, do not wish to confine the invention to the form shown, but to include all forms which .are included within the scope of the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l1. In combination in a planer, a tool supporting member having engageable surfaces, a tool holder adapted to engage the said surfaces in such a manner as to lix exactly the position of the tool holder relative to the tool supporting member, and means for clamping the tool holder to the tool supporting member, adapted to permit the ready removal and replacement of the tool holder.

2. In combination in a planer, a tool supporting member, a tool holder, means adapted to i'ix exactly the position of the tool holder relative tothe tool supporting member, and means for clamping the tool holder to the tool supporting member, adapted to permit the ready removal and replacement of the tool holder.

8. In combinaton in a planer, a tool supporting' member having engageable surfaces, a toolholder adapted to engage the said surfaces in such a manner as to fix exactly the position of the tool holder relative to the tool supporting member, a clamp adapted to hold the tool holder iirmly against the tool supporting member, means for holding the clamp to the tool supporting member, and means for tightening the clamp.

' 4. In combination in a planer, a tool supporting member having engageable surfaces, a tool holder adapted to engage the said surfaces in such a manner as to prevent relative sliding motion between the tool holder and the tool supporting member, and means for clamping the tool holder to the tool supporting Vmember, adapted to permit the ready removal and replacement of the tool holder.

5. In combination in a machinel tool, a tool supporting member having grooves formed therein, a tool holder having tongues adapted to engage the said grooves, a stud adapted to project through an opening in the said tool holder, a clamp on the stud adapted to pass through the said opening, vwhen in one position, and to clamp the said tool holder to the tool supporting member, when in another position, and a ed to draw the said clamp against the said tool holder. i

6. In combination in a machine tool, a tool supporting member, a tool holder, the said tool supporting member and tool holder having complementary interlocking surfaces adapted to prevent relative sliding movement between the said tool supporting member and the tool holder, a clamp adapted to hold the tool holder against the tool supporting member, and so formed as to permitl the ready removal and replacement of the tool holder, means for holding the clamp to the tool supporting member, and means for tightening the clamp.

7. In combination in a machine tool, a swinging block adapted' to support a tool, a tool holder to be supported thereon, the said block and tool holder having complementary interlocking surfaces adapted to iix exactly the position of the tool holder relative to the block, a stud adapted to project through an opening in the said tool holder, a clamp on the stud adapted to pass through the said opening when in one" position, and to clamp the said tool holder to the swinging block when in another position, and a nut adapted to draw the. said clamp against the said tool holder.

8. A device for permitting a machine tool having a swinging tool mounting apron to be arranged for a series of predetermined operations using different tools, comprising the combinaton with a swinging apron, of a series of tool carrying members, in which tools may be adjustably placed, means for detachably securing said members one at a time to the apron and complementary means between the apron and the tool carrying members, whereby the relative positions of the members with the apron when mounted thereon are fixed and predetermined FORREST E. CARDULLO.

nut adapt- 

